Improvement in doors for reverberatory and other furnaces



C. H. BURGESS, 2nd.

I Protecting Furnaces. No. 34,401. Patented Feb.'18, i862.

Witnes ses= Inve nton AM. PHD'I'O-LITHO- C0- N.V. (OSEORN ES PROCESS) NTTED STATES PATENT OFF CE.

CHARLES H. RURGRss, 21), OF SANDWICH, MAssACHUsETTS.

IMPROVEMENT lN DOORS FOR REVERBERATORY AND OTHER FURNACES.

Specification forming part of Letters Patent No. 34,40L dated February 18, 1862.

To all whom it may concern Be it known that I, CHARLES H. BURGESS, 2d, of Sandwich, in the county of Barnstable and State of Massachusetts, have invented a new and useful Improvement in the Doors of Rever-beratory and other Furnaces; and I do hereby declare that the following is a full, clear, and exact description of the construc- .tion and operation of the same, reference being had to the annexed drawing, making a part of this specification, in which the figure represents an elevation of a portion of a furnace-front with the improved door attached.

The nature ofgny invention consists in constructing the doors of such furnaces as above with a chamber or space within themselves, water-tight, except at the top, which may be left entirely open, which space is kept constantly supplied to a proper height with cold water, which prevents any part of the door from attaining such a temperature as would be destructive to the metal of which it is composed, and thereby greatly increasing its durability.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A represents in the figure a portion of a furnace-front with the usual apparatus, F, for lifting the door.

B represents the door, which is of the usual form and proportion; but instead of being adapted to receive a lining of fire-brick or some similar material on the side exposed to the fire, as is usually the case, I construct the door with a hollow space capable 'of containing a considerable amount of water. This space is entirely open at the top, so that any steam produced from the water may freely escape.

E is a pipe leading from some reservoir of cold water, so placed as to deliver the water into this chamber, extending a short distance below the top of the door, yet not so long but that the door may be raised to the height desired.

such a length that when the door is raised to its full height it may extend a short distance below the top of pipe D, just sufficient to prevent its becoming disengaged therefrom.

When the furnace is in operation, water is admitted to the chamber in the door from pipe -E,which fills the chamber to the height where G is inserted, by which any excess of supply is conducted off.

It will be seen that by the arrangement of the pipes described the water in the chamber will be maintained at the Same height, Whatever may be the position of the door.

' It is well known to the practical on this subject that the doors of such furnaces, owing to the intense and unevenlydisposed heat to which they are subjected, soon become warped and troublesome to operate, and are soon after destroyed. As the temperature of this improved door seldom exceeds that of boiling water, it retains its shape perfectly and endures for an indefinite or great length of time.

What I claim as my invention, and desire to secure by Letters Patent, is

Constructing the doors of reverberatory and other furnaces with the water-space herein described, in combination with the arrangement of the pipes, essentially as herein set forth.

CHARLES H. BURGESS, 2D.

Witnesses:

ALDEN N. ELLIS, I EMMA A. ,GURNEY.\ 

